{"instruction": "You are an expert in event extraction. Please extract events from the input that conform to the schema definition. Return an empty list for events that do not exist, and return NAN for arguments that do not exist. If an argument has multiple values, please return a list. Respond in the format of a JSON string.", "schema": [{"event_type": "potential therapeutic event", "trigger": true, "arguments": ["Treatment.Time_elapsed", "Subject.Race", "Treatment.Freq", "Subject.Gender", "Subject.Population", "Treatment.Disorder", "Treatment.Dosage", "Treatment.Drug", "Treatment", "Subject", "Subject.Age", "Effect", "Treatment.Route", "Subject.Disorder", "Treatment.Duration", "Combination.Drug"]}, {"event_type": "adverse event", "trigger": true, "arguments": ["Treatment.Disorder", "Treatment.Route", "Treatment.Time_elapsed", "Subject.Population", "Treatment", "Treatment.Dosage", "Combination.Drug", "Treatment.Freq", "Effect", "Subject.Gender", "Subject.Disorder", "Subject"]}], "input": "The results from the present study suggest that tissue plasminogen activator treatment appears to be safe in patients with acute ischemic stroke taking warfarin with an international normalized ratio <1.7 and may reduce the risk of poor functional outcome."}
{"potential therapeutic event": [{"trigger": "appears ", "arguments": {"Treatment.Time_elapsed": "NAN", "Subject.Race": "NAN", "Treatment.Freq": "NAN", "Subject.Gender": "NAN", "Subject.Population": "NAN", "Treatment.Disorder": "acute ischemic stroke", "Treatment.Dosage": "NAN", "Treatment.Drug": ["warfarin", "tissue plasminogen activator"], "Treatment": ["tissue plasminogen activator treatment", "taking warfarin with an international normalized ratio <1.7"], "Subject": "patients with acute ischemic stroke", "Subject.Age": "NAN", "Effect": "may reduce the risk of poor functional outcome", "Treatment.Route": "NAN", "Subject.Disorder": "NAN", "Treatment.Duration": "NAN", "Combination.Drug": ["warfarin", "tissue plasminogen activator"]}}], "adverse event": []}